Commit Graph

10 Commits

Author SHA1 Message Date
Matt Arsenault
c3f95e0648 AMDGPU: Don't assert in TTI with fp32 denorms enabled
Also refine for f16 and rcp cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312213 91177308-0d34-0410-b5e6-96231b3b80d8
2017-08-31 05:47:00 +00:00
Matt Arsenault
c11234753f AMDGPU: Make some packed shuffles free
VOP3P instructions can encode access to either
half of the register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302730 91177308-0d34-0410-b5e6-96231b3b80d8
2017-05-10 21:29:33 +00:00
Matt Arsenault
d706d030af AMDGPU: Mark all unspecified CC functions in tests as amdgpu_kernel
Currently the default C calling convention functions are treated
the same as compute kernels. Make this explicit so the default
calling convention can be changed to a non-kernel.

Converted with perl -pi -e 's/define void/define amdgpu_kernel void/'
on the relevant test directories (and undoing in one place that actually
wanted a non-kernel).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@298444 91177308-0d34-0410-b5e6-96231b3b80d8
2017-03-21 21:39:51 +00:00
Matt Arsenault
bb366db643 AMDGPU: Cost model for basic integer operations
This resolves bug 21148 by preventing promotion to
i64 induction variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@264376 91177308-0d34-0410-b5e6-96231b3b80d8
2016-03-25 01:16:40 +00:00
Matt Arsenault
359a7d918e AMDGPU: Partially implement getArithmeticInstrCost for FP ops
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@264374 91177308-0d34-0410-b5e6-96231b3b80d8
2016-03-25 01:00:32 +00:00
Matt Arsenault
e4e369ab90 TTI: Report 0 cost for free addrspacecasts
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@264369 91177308-0d34-0410-b5e6-96231b3b80d8
2016-03-25 00:26:29 +00:00
Matt Arsenault
93e0b28a0e TTI: Use 0 for cost of fabs if free
Ideally this would also happen for fneg, but that
isn't a distinct operation in the IR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@264368 91177308-0d34-0410-b5e6-96231b3b80d8
2016-03-25 00:26:22 +00:00
Matt Arsenault
42792ff39d AMDGPU: TTI: Make insertelement free.
We don't want to have a cost to scalarizing operations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@264364 91177308-0d34-0410-b5e6-96231b3b80d8
2016-03-25 00:14:11 +00:00
Matt Arsenault
b11dd50509 AMDGPU: Override getCFInstrCost
The default cost was 0 with the assumption that it is predictable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255796 91177308-0d34-0410-b5e6-96231b3b80d8
2015-12-16 18:37:19 +00:00
Matt Arsenault
2320de6adb AMDGPU: Report extractelement as free in cost model
The cost for scalarized operations is computed as N * (scalar operation
cost + 1 extractelement + 1 insertelement). This partially fixes
inflating the cost of scalarized operations since every operation is
scalarized and free. I don't think we want any cost asociated with
scalarization, but for now insertelement is still counted. I'm not sure
if we should pretend that insertelement is also free, or add a way
to compute a custom scalarization cost.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254438 91177308-0d34-0410-b5e6-96231b3b80d8
2015-12-01 19:08:39 +00:00